Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:





MnDetails
5082491
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
2941901585633497855837776563213097.92009-08-21 00:07:44
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
Factored1998-12-27Joe Decker6179CF59D5C642D20Windows,Prime95,v16,(aka WS1)
Factored2000-05-31Stephen Smith6179CF59D5C642D23886241Windows,Prime95,v19,(aka WV1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkF621ED33359A6D861013
Verified
PRP without proof (not generated)
2018-05-01storm5510F621ED33359A6D861423213013
History
DateUserTypeResult
2025-01-21Sid & AndyNFno factor TF: 68-70
2025-01-11Sid & AndyNF-PM1B1=3600000, B2=9117768660
2023-04-14Kevin_9611NF-PM1B1=330000, B2=178871550
2018-05-01storm5510C-PRPM5082491/294190158563349785583777656321 : F621ED33359A6D86
2017-09-20kkmrkkblmbrbkC-PRPM5082491/294190158563349785583777656321 : F621ED33359A6D86
2009-08-21USAFSSF-PM1Factor: 294190158563349785583777656321
2009-08-08GrunwalderGIMPNFno factor TF: 1-63
2008-12-28Sturle SundeNFno factor TF: 61-62
2000-05-31-anonymous-C-LL6179CF59D5C642D2
1998-12-27-anonymous-C-LL6179CF59D5C642D2
1998-11-14-anonymous-NFno factor TF: 1-61